‒ Earth’s gravitational field models were used in combination with ship
measurements

‒ Combining
data from different sources is a new approach in marine gravimetry

‒ A method of accounting for
the ocean tide, reducing random errors is created

‒ The developments
successfully passed the tests in the Arctic and are ready for use

Abstract. The
main achievements of the authors in the field of development of innovative
methodological support for marine gravimetric surveys are presented. The
authors actively participated in the development of gravimeters and created
several generations of gravimetric equipment in cooperation with other
organizations. The main characteristics and results of laboratory and marine
tests of mobile gravimetric complexes “CHEKAN-AM” and “SHELF” are briefly
considered. These complexes were successfully operated in severe arctic
conditions, including during the first high-precision marine gravimetric survey
in the region of the North Pole of the Earth. The methodological support and
results of the use of modern models of the Earth’s gravitational field and the
integration of data from various means of determining gravity in the interests
of marine gravity are described. The increase in the accuracy and resolution of
Earth’s gravitational field models leads to their use beyond the solution of
only fundamental problems. In most areas of the World Ocean, the model field
can be used as a reference field when performing a direct marine gravimetric
survey. Innovative developments have increased the reliability and accuracy of
marine surveys primarily due to the control and correction of systematic errors
arising in marine measurements. They make it possible to shoot at sea ranges
with an error of 0.5 mGal or less, expand the planning capabilities of the
survey network, increase the reliability of long-term route surveys, reduce the
time of reference measurements, to perform marine gravimetric survey without
reference to shore support points and with one marine gravimeter on board
without loss of reliability of measurements. An innovative method of accounting
for the ocean tide with application of loading models of the ocean
gravitational effect was developed according to the program ATLANTIDA3.1_2014.
Experiments have shown that with this way it is possible to reduce the random
errors by more than 20%. Based on the results of the research, ready-made
innovative and promising methods for measuring the parameters of the Earth’s
gravitational field on the surface of the waters of the World Ocean have been
developed.